Question

A dog is 60m away while moving at constant velocity of 10m/s towards you. Where is the dog after 4 seconds?

Answer 1

20m away

the dog was 60m away from. you subtract 40m since it is 10m/s x 4 seconds

Answer 2

the dog is 20m away.
if the dog moves 10m/s, multiply 10 by 4, subtract 40 from 60. 20